Auto audio amplifier



FIG. 1 is a front view of an auto audio amplifier, showing my new design.

FIG. 2 is a rear view thereof.

FIG. 3 is a top view thereof.

FIG. 4 is right side view thereof; and,

FIG. 5 is left side view thereof.

The bottom view of the auto audio amplifier forms no part of the claimed design. 

The ornamental design for an auto audio amplifier, as shown and described. 